I am interested in some topics and threads, that I would like to have listed as "watched". Is there any way, how to mark them so they could have a priority in listing? And if not, would it be possible to add that feature to EAB?

I hope you understand what I want to tell.

EDIT: I found a menu feature "Subscribed thread", it could be a solution maybe. I will give it a try.

Or when you reply, you can Go Advanced and check a checkbox there. This checkbox can be set to checked by default in your User CP, if you prefer to always see replies to threads you've replied in. When you get the email, you can then click the unsubscribe link if you don't want it to do that anymore.